NF2206EA bearing: complete specifications & equivalents
The NF2206EA is a ISO 15 radial bearing sized 30 x 62 x 20 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | NTN |
| Bore diameter d | 30 mm |
| Outer diameter D | 62 mm |
| Width B | 20 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Basic dynamic load rating C | 58 kN |
| Basic static load rating C0 | 50 kN |
| Fatigue load limit Pu | 6.1 kN |
| Limiting speed (mechanical) | 9700 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 259 g |
| Manufacturer designation | NTN NF2206EA |
| Standard | ISO 15 |
| Catalog version | NTN Ball and Roller Bearings CAT.No.2203E |
| Last verified | 2026-10-01 |
Source: catalog reference (NTN Ball and Roller Bearings CAT.No.2203E) · extracted 2026-10-01
Parameters extracted from the official NTN Ball and Roller Bearings catalogue (NTN Ball and Roller Bearings CAT.No.2203E); NTN® is a trademark of NTN Corporation, used here for identification only — mpnbase is not an authorized NTN distributor. Boundary dimensions are ISO 15 interchangeable; current production values may differ, verify at ntnglobal.com.
Dimensions in inches & NF2200-series range
| Bore d | 1.181 in |
|---|---|
| Outer diameter D | 2.441 in |
| Width B | 0.787 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 16 mm |
| Smallest bore in NF2200-series | 20 mm |
| Largest outer diameter in NF2200-series | 170 mm |
| Width range across NF2200-series | 18–43 mm |
| Bore position in NF2200-series (smallest first) | 3 of 16 |
| Bore above smallest NF2200-series size | 10 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| NF2206EA | ISO 15 | full Dimensions and internal design equivalent — standard interchange. | ISO 15 boundary-dimension envelope; standard interchange — confirm clearance class and precision with the supplier. |
Interchange levels: full standard interchange · partial verify parameters · verify manual confirmation required. Links resolve to the equivalent model's specification page where available.
How the NF2206EA model number is decoded
The NTN order number NF2206EA denotes a 30×62×20 mm (1.181 × 2.441 × 0.787 in) cylindrical roller bearing in the NF2200 family, the EA high-capacity pressed sheet-steel cage. The leading NF defines the rib arrangement (one rib on each ring); the dimension-series digits and the two-digit bore code resolve to 30 mm, with 62 mm OD and 20 mm width from the ISO 15 general plan. The 20 mm width and 16.0 mm section put the NF2200 series in the wide (22) section; wide 22/23 variants at the same bore change OD, width and heat generation and are not drop-in swaps. The 30 mm (1.181 in) bore and 62 mm (2.441 in) OD are ISO 15 boundary values; fillet and shoulder dimensions must still come from the NTN mounting table for the 20 mm-wide ring. Heat the inner ring to max 120 °C for the 30 mm interference fit and support the ring face square during fitting; cocking over a keyway brinells the raceway before first rotation.
Typical equipment & failure modes
Common applications
- fan and blower rotor positions
- industrial gearbox input and output shafts
- medium electric-motor and generator shafts
- pump and compressor crankshafts and rotors
Known failure patterns
- inner-ring raceway spalling from overload in the line-contact Hertzian zone
- pressed-steel cage pocket wear when rollers skid at light load or too-thin lubricant
- grease starvation and cage drag when relubrication intervals are extended past the grease life
- edge loading from shaft deflection beyond the 3–4 arc-minute alignment limit
- fretting corrosion on a loose rotating shaft seat
Selection pitfalls — read before you substitute
- On this 30 mm bore, shaft thermal growth can preload the inner ring if the fit is too tight; verify residual interference at temperature and confirm the float ring still slides after mounting NF2206EA.
- Open NF2206EA units need application-supplied sealing and a defined lubricant schedule; film thickness is the first failure mode for line contact when viscosity drops at the 30 mm contact.
- The NF rib arrangement is not interchangeable with another prefix on the same 30 mm seat: one rib on each ring. Swapping NU for NJ changes axial location behaviour even though the 62×20 mm envelope matches.
- Grease limiting speed 9,700 r/min and oil 13,200 r/min are different limits for NF2206EA: the first is the cage/lubricant mechanical ceiling, the second assumes real oil flow rather than an oil bath.
- Open NF2206EA units need application-supplied sealing and a defined lubricant schedule; film thickness is the first failure mode for line contact when viscosity drops at the 30 mm contact.
- The 58/50 kN ratings, 6.1 kN Pu and 259 g mass are NTN Ball and Roller Bearings CAT.No.2203E values for NF2206EA (EA pressed-steel-cage execution); other makes sharing the ISO 15 envelope revise internal geometry without changing the order number, so keep the 2203E reference with the specification for critical drives.
Frequently asked questions
What are the dimensions and catalogue data of NF2206EA?
NF2206EA is an NTN NF single-row cylindrical roller bearing to ISO 15: 30 mm bore, 62 mm OD and 20 mm width (1.181 × 2.441 × 0.787 in). From NTN Ball and Roller Bearings CAT.No.2203E: C 58 kN, C0 50 kN, Pu 6.1 kN, grease limiting speed 9,700 r/min, oil 13,200 r/min, mass about 259 g. It is open, with the EA high-capacity pressed sheet-steel cage.
What is the difference between NU, NJ, NUP, N and NF cylindrical roller bearings?
The prefix states the rib arrangement: NU has two outer-ring ribs and a ribless inner ring (float, no axial load); NJ adds ribs for one-direction location; NUP adds a loose L-ring to locate both directions; N has two inner-ring ribs and a separable outer ring; NF has one rib per ring for one-direction guidance. NF2206EA is one integral rib on each ring — separable inner ring with single-direction axial guidance and a defined shaft position.
What do the EA, E and ＊ suffixes mean on NTN cylindrical roller bearings?
EA is NTN's high-capacity design with a pressed sheet-steel cage and optimised roller complement in the same ISO 15 envelope; E marks the high-capacity design at the larger bores; the ＊ symbol printed before the code in the NTN catalogue marks the ULTAGE new-generation specification and is not typed as part of the order number. This page's bearing carries the EA pressed-steel-cage execution.
Can NF2206EA take axial load and locate a shaft?
the NF design gives one-direction axial guidance via its single outer-ring rib. The loose rib ring still only suits light/short-duration axial guidance; heavy thrust belongs to a dedicated thrust bearing.
What do Fw and Ew mean for NF2206EA?
Fw is the inner sub-assembly raceway/roller-set envelope diameter and Ew the outer-ring raceway diameter printed for geometric checks: Fw 37.5 mm, Ew 55.5 mm. The nominal bore/OD remain 30/62 mm; Fw/Ew describe the rolling-contact path, and speeds still run to 9,700 r/min grease / 13,200 r/min oil.
Reviewed & verified by the MPN Base engineering desk against source catalog NTN Ball and Roller Bearings CAT.No.2203E on 2026-10-01. Read our editorial & correction policy.